C# WebClient.DownloadString() Returns String With Perculiar Characters?
Jan 17, 2011
I have an issue with some content that we are downloading from the web for a screen scraping tool that I am building.in the code below, the string returned from the web client download string method returns some odd characters for the source download for a few (not all) web sites.I have recently added http headers as below. Previously the same code was called without the headers to the same effect. I have not tried variations on the 'Accept-Charset' header, I don't know much about text encoding other than the basics.The charachters, or character sequences that I refer to are:
""
and
"Â"
These characters are not seen when you use "view source" in a web browser. What could be causing this and how can I rectify the problem?
string urlData = String.Empty;
WebClient wc = new WebClient();
// Add headers to impersonate a web browser. Some web sites
// will not respond correctly without these headers
wc.Headers.Add("User-Agent", "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-GB; rv:1.9.2.12) Gecko/20101026 Firefox/3.6.12");
wc.Headers.Add("Accept", "*/*");
wc.Headers.Add("Accept-Language", "en-gb,en;q=0.5");
wc.Headers.Add("Accept-Charset", "ISO-8859-1,utf-8;q=0.7,*;q=0.7");
urlData = wc.DownloadString(uri);
I'm using WebClient.DownloadString("http://www.website.com/Default.aspx?fltdte=01050402);Part of data that is returned I want to put again in above url for query again and again if data returned satisfy conditions..I want to do multiple webClient.DownloadString.How to do that?
So here's the deal. I'm creating a spider bot for a website that scans all the product pages and records the product data. I'm using C# and the WebClient library to download the HTML string. The site I'm crawling must be specially made because the HTML that is received from WebClient.DownloadString() is different than the HTML that I get when I view the source of the HTML when visiting it on a browser. This seems intentional because the only info I can't get is the price.
I am trying to use a WebClient to get the content of another webform in my project. I am using a WebClient because I want to do this asynchronously, so if there is a better way to do that, I am open to it.My webclient, however, is erroring with the "Illegal characters in path" error. Looking at it in the debugger, I see that this is the URI string I am using:
I have a string with 100 characters and it is for me too long in one line. I want to make NewLine after each 25 characters. For example:
Instead: "Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua."
I'm mix up between webclient.OpenReadAsync and webclient.DownloadStringAsync? Can anyone explain clearly for me ? What are the difference between them? In addition, may i know whether webclient.OpenReadAsync got download the file or just open and read the file only without download to other places?
I have two sub routines that I've created to pull in my Membership user roles and assign the value/name of that role to the value of a cookie.
My first subroutine looks like this
[Code]....
At this point, role ID is a 1-dimentional array which is not acceptable for a cookie's value (it must be a string), but in Debug mode, I can see that the array does contain the correct roleID value. In my 2nd subroutine I change the value from array to string for no other reason than that it gives me an opportunity to see that the value of CookieValue() before it is converted does have the correct roleID.
[Code]....
Even though it still shows that string as having the correct value, it returns the object "System.String[]"
I want to show just a part of a string for example:
Instead: "Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua."
Just a: "Lorem ipsum dolor sit amet, consetetur sadipscing..."
The reason that I select elements by css class selector ($(".classificationFolder")) is that, this control is a user control and used in the same page more than once. That is why I'm not using $("#searcher").
I tested the code In IE8 and Chrome 8.0.552.28 beta. This issue is arising in both of the browsers.
On the other hand, request is sent to the server, client received response successfuly and response is processed on the client.
I've got a program that in a nutshell reads values from a SQL database and writes them to a tab-delimited text file.
The issue is that some of the values in the database have special characters (TM, dash, ellipsis, etc.) When written to the text file, the formatting is lost and they come across as junk "â„¢ or â€" etc"
When the value is viewed in the immediate window, before it is written to the txt file, everything looks fine. My guess is that this is an issue of encoding. But, I'm not real sure how to proceed, where to look, or what to look for.
Is this ASCII or UTF-8? If it's one of those how do I correct it before it's written to the text file.
Here's how I build the text file (where feedStr is a StringBuilder)
objReader = New StreamWriter(filePath) objReader.Write(feedStr) objReader.Close()
I'm currently working on this application that records a users email.
I was wondering if there was a function that would read the last 7 digits of the inputted user email and store it in a variable? Is there any way to do this?
I need to be able to sort by a product title and then by a products price, which is simple but I only want the title sorted on the first 3 or 4 characters. My client wants to add the brand name to the beginning of the product title and have them automatically sorted. I can a new field in the database called brand and sort by that, but wanted to know if this is possible. I've posted what I though might work but it doesn't
[Code]....
I guess this is probably possible with a lambda expression, but I've no experience with Lambda expressions at all.
I want to display description of product in gridview, but i want to display only 15 characters on one line, I want to break it after 15 characters, I have written countchar function as follows:
public int CountChars(string value) { bool lastWasSpace = false; foreach (char c in value) { result++; lastWasSpace = false; } return result; }
I have users emails in my database and when i retrieve those usernames, i want to remove every charecter after the @ charecter in the email for example, i have myname@domain.com i want to cut that to myname.
using vb.net/asp.net 2005 and sql server 2005. I'm querying the database and returning text which I am then adding to a string. I'm creating a crystal report with the text however this is not a crystal report question, its about the string data. what I"m noticing is that when I show the string on the pdf that there are some strange characters at the end of the string. I am both trimming the string and taking out null characters however the strange text shows up like this:
i want to display values in dropdownlist using querystring[which is successfully happening] but the problem is when id passed in querystring is 7.17 then in dropdownlist it is displaying values as 7 . 1 7....but i want to display it as 7 and 17...
